ZipFile getComment() function in Java with examples

Last Updated : 06 Mar, 2019

The getComment() function is a part of java.util.zip package. The function returns a string which is the comment of the zip file.

Function Signature:

public String getComment()

Syntax:

zip_file.getComment();

Parameters: The function does not require any parameters
Return value: The function returns a String, which is the comment of the zip file

Exceptions: The function throws IllegalStateException if the zip file has been closed

Below programs illustrates the use of getComment() function

Example 1: Create a file named zip_file and get the comment using getComment() function.”file.zip” is a zip file present in f: directory.

// Java program to demonstrate the 
// use of getComment() function 
  
import java.util.zip.*; 
  
public class solution { 
    public static void main(String args[]) 
    { 
  
        try { 
  
            // Create a Zip File 
            ZipFile zip_file 
                = new ZipFile("f:\\file.zip"); 
  
            // Display the comment 
            // of the zip file 
            // using getComment() function 
            System.out.println("comment = "
                               + zip_file.getComment()); 
        } 
        catch (Exception e) { 
            System.out.println(e.getMessage()); 
        } 
    } 
} 

Output:

comment = This is a zip file comment

Example 2: Create a file named zip_file and get the comment using getComment() function. This function throws exception if we close the file and then call the function getComment().

// Java program to demonstrate the 
// use of getComment() function 
  
import java.util.zip.*; 
  
public class solution { 
    public static void main(String args[]) 
    { 
  
        try { 
  
            // Create a Zip File 
            ZipFile zip_file 
                = new ZipFile("f:\\file.zip"); 
  
            // close the file 
            zip_file.close(); 
  
            // Display the comment 
            // of the zip file 
            // using getComment() function 
            System.out.println("comment = "
                               + zip_file.getComment()); 
        } 
        catch (Exception e) { 
            System.out.println(e.getMessage()); 
        } 
    } 
} 